Table 2.

Impact of sleep duration on anxiety at 3 months after stroke.

Sleep duration (h)	Odds ratio (95% confidence interval, P-value)
Total (n = 1,446)	Model 1	Model 2	Model 3
6–7	2.10 (0.72–1.67, 0.64)	1.10 (0.72–1.68, 0.65)	1.09 (0.71–1.67, 0.68)
5–6	2.08 (1.34–3.25, <0.01)	2.11 (1.35–3.30, <0.01)	1.95 (1.24–3.07, <0.01)
<5	3.63 (2.09–6.28, <0.01)	3.54 (2.02–6.21, <0.01)	3.41 (1.94–6.04, <0.01)
P for trend	P < 0.01	P < 0.01	P < 0.01
Male (n = 1056)
6–7	1.27 (0.77–2.08, 0.33)	1.28 (0.78–2.12, 0.32)	1.30 (0.78–2.14, 0.30)
5–6	2.11 (1.24–3.59, <0.01)	2.13 (1.24–3.65, <0.01)	2.05 (1.19–3.52, <0.01)
<5	4.00 (2.06–7.75, <0.01)	4.04 (2.06–7.95, <0.01)	4.07 (2.06–8.01, <0.01)
P for trend	P < 0.01	P < 0.01	P < 0.01
Female (n = 390)
6–7	0.79 (0.35–1.76, 0.57)	0.77 (0.34–1.75, 0.54)	0.64 (0.27–1.51, 0.31)
5–6	2.04 (0.91–4.59, 0.08)	1.83 (0.79–4.20, 0.15)	1.33 (0.55–3.22, 0.51)
<5	2.93 (1.10–7.79, 0.03)	2.09 (0.70–6.27, 0.18)	1.52 (0.48–4.78, 0.47)
P for trend	P = 0.01	P = 0.10	P = 0.41
P for interaction*	P = 0.75	P = 0.76	P = 0.68

Model 1: Adjusted for age and gender.

Model 2: Adjusted for Model 1 + marital status, education, monthly income, current smoker, current drinker, physical activity, body mass index, history of hypertension, hyperlipidemia, diabetes, heart disease, and migraine.

Model 3: Adjusted for Model 2 + NIHSS and ward type/specialty during hospitalization.

^*P for interaction: analyses were stratified by gender.